JPS63228911A - Method of forming water-barrier layer of power cable joint - Google Patents
Method of forming water-barrier layer of power cable jointInfo
- Publication number
- JPS63228911A JPS63228911A JP6335987A JP6335987A JPS63228911A JP S63228911 A JPS63228911 A JP S63228911A JP 6335987 A JP6335987 A JP 6335987A JP 6335987 A JP6335987 A JP 6335987A JP S63228911 A JPS63228911 A JP S63228911A
- Authority
- JP
- Japan
- Prior art keywords
- water
- power cable
- metal sheet
- metal
- cylindrical metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 239000002184 metal Substances 0.000 claims description 37
- 238000005476 soldering Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Processing Of Terminals (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業−１−の利用分野）
本発明は例えば架橋ポリエチレン絶縁型カケープル（以
下ＣＶケーブルと略称する）等の接続部を金属により遮
水処理を施こす場合の遮水層形成方法に関するものであ
る。Detailed Description of the Invention (Field of Application in Industry-1-) The present invention is applicable to water-shielding applications in which, for example, the connection portions of cross-linked polyethylene insulated cables (hereinafter abbreviated as CV cables) are treated with water-shielding treatment using metal. The present invention relates to a layer forming method.
（従来技術及び解決しようとする問題点）ＣＶケーブル
の絶縁体は水に触れると劣化を生じ易くなる。そのため
通常２１５ｋＶ以」−のような超高圧ＣＶケーブルでは
ケーブルコアの外側にアルミニウム等の金属シースが設
けられ、その接続部には鋼管等の金属保護管が施こされ
る。従ってその金属シースと金属保護管の接続部も金属
により遮水構造としなければ、この部分がケーブル内へ
の浸水の弱点となる。そのため、従来はこの部分に次の
ような処理が行われていた。(Prior Art and Problems to Be Solved) The insulation of CV cables tends to deteriorate when exposed to water. Therefore, in an ultra-high voltage CV cable such as 215 kV or higher, a metal sheath made of aluminum or the like is provided on the outside of the cable core, and a metal protection tube such as a steel pipe is provided at the connection portion of the cable core. Therefore, unless the connection part between the metal sheath and the metal protection tube is also made of metal and has a water-shielding structure, this part becomes a weak point from which water can infiltrate into the cable. Therefore, conventionally, the following processing was performed on this part.
■鉛工処理・・・金属シースと金属保護管の継ぎ１１を
ハンダで固めてしまう方法で、特にＯＦケーブルでは古
くから実績がある。■Lead processing: This is a method of solidifying the joint 11 between the metal sheath and metal protection tube with solder, and this method has been used for a long time, especially for OF cables.
■遮水層処理・・・第１図に示すように鉛ンート等を筒
状にした筒状金属ソート（３）を金属ノース（１）と接
続部金属保護管■の間に２ノｌせ、それぞれの端部をハ
ンダ付け手（３＾）（恥）で接合する方法で、通常この
方法では熱源としてハンダゴテが用いられる。■Water-blocking layer treatment...As shown in Figure 1, place 2 liters of cylindrical metal sort (3) made of lead or similar material between the metal north (1) and the metal protection tube at the connection part ■. , a method of joining each end with a soldering hand (3^) (shame), and usually a soldering iron is used as a heat source in this method.
しかし、上記■の鉛工処理方法では火気を使用する必要
があること、及びＣ■ケーブルの絶縁体が高温にさらさ
れて電気性能の低下をきたすおそれがある等の問題点が
ある。又」１記■の遮水層形成におけるハンダ付け処理
は少し誤まれば筒状金属シート（３）を構成する鉛シー
トを溶かしてしまったり、全周が均一にハンダ付け出来
ないおそれがあり、作業に熟練を要する。又現場スペー
スの関係で、下側や狭いところではハンダゴテを使用し
難いという問題点がある。However, the above lead processing method (1) requires the use of fire, and there are problems such as (2) the possibility that the insulation of the C cable may be exposed to high temperatures, resulting in a decrease in electrical performance. In addition, if the soldering process in forming the water-blocking layer in item 1.2 is slightly incorrect, the lead sheet that makes up the cylindrical metal sheet (3) may be melted, or the entire circumference may not be soldered uniformly. Requires skill to work. Another problem is that it is difficult to use a soldering iron at the bottom or in a narrow space due to space limitations.
（問題点を解決するための手段）
本発明は前記の遮水層処理方法を改善することにより、
上述の問題点を解消するもので、その特徴は、ハンダ付
け処理に必要な加熱を筒状金属シートの外表面に電気ヒ
ータを巻付けることにより施こすことにある。(Means for solving the problems) The present invention improves the above-mentioned impermeable layer treatment method, thereby achieving the following:
This method solves the above-mentioned problems, and its feature is that the heating required for the soldering process is applied by wrapping an electric heater around the outer surface of the cylindrical metal sheet.
第２図は本発明の遮水層形成方法の説明図で、第１図（
３α）部分のハンダ付けの具体例を示し、同図（イ）は
外観図、同図（ロ）は（イ）図のＸ−Ｘ断面図である。Figure 2 is an explanatory diagram of the method for forming a water-blocking layer according to the present invention, and Figure 1 (
A specific example of soldering in the part 3α) is shown, in which figure (a) is an external view, and figure (b) is a cross-sectional view taken along line XX in figure (a).
図面に示すように、あらかじめ接続部金属保護管■の端
部外周」二にハンダ層（５）を設けておき、この」二に
筒状金属シート（３）の端部を重ね合せ、その上から帯
状の電気ヒータ（４）を１〜数回巻付け、この電気ヒー
タ（４）に通電して加熱することにより接続部金属保護
管■」−に設けたハンダ層（５）が筒状金属シート（３
）に溶着する。又ケーブル金属シース（１）と筒状金属
シート（３）の間についても前記同様に実施することに
よりケーブル金属シース（］）と筒状金属ソート（３）
はハンダ付けされ、筒状金属シート（３）による遮水層
が形成される。As shown in the drawing, a solder layer (5) is provided in advance on the outer periphery of the end of the connecting metal protective tube (2), and the end of the cylindrical metal sheet (3) is superimposed on this (2), and then A strip-shaped electric heater (4) is wound one to several times, and by heating the electric heater (4) by applying electricity, the solder layer (5) provided on the connection metal protection tube becomes a cylindrical metal. Sheet (3
). In addition, by performing the same process as described above between the cable metal sheath (1) and the cylindrical metal sheet (3), the cable metal sheath (]) and the cylindrical metal sort (3) are separated.
are soldered to form a water-blocking layer of the cylindrical metal sheet (3).
この際、帯状電気ヒータ（４）として１側縁（４沈）が
他側縁（４６）よりも高温になるようなヒータを用い、
高温側（４＾）が筒状金属シート（３）の端部側（３Ｃ
）に位置するように巻付けて加熱すれば、筒状金属シー
ト（３）として鉛シートを用いた場合には、低温側（イ
８）は溶かさずに押え付ける役割を果すが、高ｌＱ側（
４＾）は筒状金属シート（３）の端部側（３Ｃ）を溶か
し、不要なこの部分を容易に除去することができる。At this time, a heater is used as the strip electric heater (4) such that one side edge (4 sinks) is hotter than the other side edge (46),
The high temperature side (4^) is the end side (3C) of the cylindrical metal sheet (3).
) If a lead sheet is used as the cylindrical metal sheet (3), the low temperature side (A8) will play the role of holding it down without melting, but the high lQ side will (
4^) melts the end side (3C) of the cylindrical metal sheet (3), making it possible to easily remove this unnecessary portion.
（発明の効果）
上述した本発明の遮水層形成方法によれば、熱源として
帯状電気ヒータを用い、これをハンダ付け部に巻付けれ
ばよいので、全周均一に加熱することができ、狭い場所
でも実施が可能となる。従って現場における作業性が改
善されると共に、遮水層の信頼性も著しく向上する。(Effects of the Invention) According to the water-blocking layer forming method of the present invention described above, a strip-shaped electric heater is used as a heat source, and it is sufficient to wrap it around the soldering part, so that uniform heating can be achieved all around the circumference, and even narrow spaces can be heated. It can be carried out anywhere. Therefore, workability on site is improved, and the reliability of the impermeable layer is also significantly improved.
第１図は電力ケーブルの接続部の遮水処理の一例の説明
図である。
第２図は本発明の遮水層形成方法の具体例の説明図で、
同図（イ）は外観図、同図（ロ）は（イ）図のＸ−Ｘ断
面図である。
１・・・ケーブル金属シース、２・・・接続部金属保護
管、３・・・筒状金属ノート、４川電気ヒータ、５・・
・ハンダ層。
算 １ 閃
惨 ２ 目
ＩへｒFIG. 1 is an explanatory diagram of an example of water-shielding treatment for a connecting portion of a power cable. FIG. 2 is an explanatory diagram of a specific example of the water-blocking layer forming method of the present invention.
Figure (A) is an external view, and Figure (B) is a sectional view taken along line XX in Figure (A). 1... Cable metal sheath, 2... Connection metal protection tube, 3... Cylindrical metal notebook, 4 river electric heater, 5...
・Solder layer. Calculation 1 Senzan 2 Go to I
Claims (2)
金属保護管との間に、その端部を金属シース及び金属保
護管のそれぞれ端部に重ね合せて筒状の金属シートを被
せ上記重ね合せ部をハンダ付け処理により遮水層を形成
する方法において、上記ハンダ付け処理に必要な加熱を
上記筒状金属シートの外表面に電気ヒータを巻付けるこ
とにより施こすことを特徴とする電力ケーブル接続部の
遮水層形成方法。(1) A cylindrical metal sheet is placed between the metal sheath of the power cable and the metal protection tube of the cable connection part, with its ends overlapping the ends of the metal sheath and the metal protection tube, respectively, and the above-described overlapping is performed. A method for forming a water-blocking layer by soldering a portion of the metal sheet, the power cable connection comprising: heating necessary for the soldering by wrapping an electric heater around the outer surface of the cylindrical metal sheet. How to form a water-blocking layer.
となるようなヒータを用い、高温側が筒状金属シートの
端部側に位置するよう巻付けて加熱することを特徴とす
る特許請求の範囲第１項記載の電力ケーブル接続部の遮
水層形成方法。(2) The heater is characterized in that the electric heater is in the form of a band, one side of which is hotter than the other side, and is heated by wrapping it around the cylindrical metal sheet so that the high temperature side is located on the end side of the cylindrical metal sheet. A method for forming a water-blocking layer at a power cable connection portion according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6335987A JPS63228911A (en) | 1987-03-17 | 1987-03-17 | Method of forming water-barrier layer of power cable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6335987A JPS63228911A (en) | 1987-03-17 | 1987-03-17 | Method of forming water-barrier layer of power cable joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63228911A true JPS63228911A (en) | 1988-09-22 |
Family
ID=13226982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6335987A Pending JPS63228911A (en) | 1987-03-17 | 1987-03-17 | Method of forming water-barrier layer of power cable joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63228911A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07111723A (en) * | 1993-10-07 | 1995-04-25 | Mitsubishi Electric Corp | Grounding material at cable joint |
-
1987
- 1987-03-17 JP JP6335987A patent/JPS63228911A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07111723A (en) * | 1993-10-07 | 1995-04-25 | Mitsubishi Electric Corp | Grounding material at cable joint |
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